The glossaries seem to be the best place for the definitions of the terms on this page.
The One Power comes from the True Source, the driving force of Creation. The male half of the True Source, saidin, and the female half, saidar, work against each other and with each other to provide the force that turns the Wheel of Time. The True Source cannot be used up just as a river cannot be used up by a mill wheel. (TEotW,Ch12)
Men grow strong in the One Power faster than women. (ACoS,Ch7) Even after being raised to the shawl, Aes Sedai may take another five years before they reach their full strength. (NS,Ch17) Excessive luck and sudden unexpected rises in prominence can be early indicators of the ability to channel in men. (NS,Epilogue) Men generally begin channeling between the ages of sixteen and twenty-six. (New Spring)
Men can only weakly detect other men holding saidin. (TFoH,Prologue)
The female Forsaken know how to mask their ability to channel so that Aes Sedai cannot detect them. (ACoS,Prologue)
When channelers (men or women) hold the One Power it blurs the images that Min sees. When they actually channel it's even worse. (ACoS,Ch2)
Channelers slow. Between the ages of twenty and twenty-five they begin aging more slowly. (ACoS,Ch24)
Pronunciation: sah-ih-DAHR, sah-ih-DEEN
Gentling is
Stilling is
The Great Lord of the Dark provides his most favored minions with the True Power that comes directly from him. It is even more addictive and dangerous than the One Power. (ACoS,Ch20) Traveling using the True Power involves ripping a hole in the Pattern. (ACoS,Ch20) Users of the True Power such as Moridin develop saa or black spots that travel across the eyes. (ACoS,Ch25) In the Age of Legends only thirty were given this privilege by the Great Lord. (ACoS,Ch25)
The gholam can detect True Power weaves. He feels it as an itch somewhat different from the One Power. (TPoD,Ch2)
Since he became Nae'blis, only Moridin is allowed access to the True Power. (WH,Ch13)